EP2279355A1 - Douille de fixation - Google Patents

Douille de fixation

Info

Publication number
EP2279355A1
EP2279355A1 EP09749554A EP09749554A EP2279355A1 EP 2279355 A1 EP2279355 A1 EP 2279355A1 EP 09749554 A EP09749554 A EP 09749554A EP 09749554 A EP09749554 A EP 09749554A EP 2279355 A1 EP2279355 A1 EP 2279355A1
Authority
EP
European Patent Office
Prior art keywords
fastening sleeve
adhesive
cover layer
sleeve according
expansion element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09749554A
Other languages
German (de)
English (en)
Inventor
Rolf Herbstreit
Walter Saier
Klaus Kaupp
Vladimir Hudec
Petr Polach
Thomas Schweikart
Alexander Zanocco
Simon Moser
Lukas Vondra
Jan Hofmann
Peter Schillinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fischerwerke GmbH and Co KG
Original Assignee
Fischerwerke GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fischerwerke GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP2279355A1 publication Critical patent/EP2279355A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
    • F16B13/141—Fixing plugs in holes by the use of settable material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/01—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening elements specially adapted for honeycomb panels

Definitions

  • the invention relates to a fastening sleeve having the features of the preamble of claim 1.
  • a fastening sleeve for sandwich panels which serves for the cohesive anchoring of connecting elements, in particular of screws.
  • Sandwich panels have two cover layers between which a core of low mechanical strength is placed.
  • the core may for example consist of a foam or honeycomb.
  • the mechanical strength of the core is not sufficient for a stable anchoring of the connecting elements. Therefore, the mounting sleeve is required.
  • the fastening sleeve has a hollow bolt with a head and a sleeve arranged around the hollow bolt. An inner diameter of the sleeve is larger than an outer diameter of the hollow bolt, so that an annular gap between the sleeve and hollow pin is formed.
  • the mounting sleeve is inserted into a borehole in the sandwich panel until the head is in the top layer and flush with it.
  • the fastening sleeve has a collar on the head, which rests on the cover layer.
  • adhesive or a binder is introduced into the hollow bolt, which emerges through radial openings from the hollow bolt and enters the annular gap between the sleeve and the hollow bolt.
  • glue is used below for simplicity, it is always meant to mean glue or a binder or the like, the glue spreading in the ring gap and exiting both ends of the sleeve and connecting the fastening sleeve to the inside of the cover layers Head has the hollow pin outlet openings from which exits adhesive and glued the head with the rear cover layer.
  • the invention is based on the object, an alternative mounting sleeve for cohesive attachment of a connecting element in a sandwich plate create, which can be used for different thickness sandwich panels.
  • the invention relates to a fastening sleeve for fastening in a sandwich panel with a receiving recess for a connecting element, a collar and an adhesive outlet opening, wherein the fastening sleeve has a length adjustment device.
  • the sandwich panel has a cover layer which is rear in the direction of insertion, a core and a cover layer facing in the direction of insertion.
  • the receiving recess extends axially through the mounting sleeve and may be closed at the front end.
  • the collar as an abutment prevents the mounting sleeve can be inserted too deep into a hole introduced in the sandwich plate.
  • the collar rests on the rear cover layer with the fastening sleeve inserted.
  • the fastening sleeve can be used in different thickness sandwich panels.
  • the collar prevents the mounting sleeve from being pushed too deeply into the wellbore and the mounting sleeve is completely in the core of the sandwich panel in which it is not fixed Holds and thus the adhesive can not or only with difficulty and uncontrollably introduced into the mounting sleeve.
  • the length adjustment device prevents the adhesive from escaping completely from the front adhesive outlet opening without being guided.
  • the length adjustment means allows adjustment of the length of the mounting sleeve so that the mounting sleeve can be inserted so far into the wellbore until the collar on the Sandwich plate is applied.
  • the length adjustment device comes into contact with the front cover layer during insertion of the fastening sleeve and adapts the fastening sleeve to the thickness of the sandwich plate.
  • At least one expansion element is provided on the fastening sleeve in order to engage behind a rear cover layer of the sandwich panel in the direction of insertion.
  • the expansion element comes with a front end previously inserted into a drilled hole in the sandwich panel.
  • the expansion element is pressed by the wall of the hole to the mounting sleeve.
  • the expansion element spreads due to an elastic bias and engages behind the inside of the rear cover layer of the sandwich panel.
  • adhesive is injected into the receiving recess and a connecting element, such as a screw, introduced before, during or after curing in the receiving recess.
  • the sandwich panel can now be processed further.
  • the spreader may alternatively be biased so that it bears against the mounting sleeve without an external force or is received in it. The spreading then takes place in that the introduced into the receiving recess screw or the exiting adhesive pushes the expansion element to the outside.
  • the two alternatives for spreading the expansion element can also be combined.
  • a further advantage of the expansion element is that it possibly retains the adhesive injected into the receiving recess and leaving the adhesive outlet openings. This does not run thereby and sticks better to the rear cover layer, whereby the mounting sleeve is anchored more secure in the sandwich panel.
  • a further advantage of the expansion element is that it prevents the attachment sleeve from being pushed out of the borehole by introduced adhesive or by an elastically acting length adjustment device.
  • the expansion element is designed such that it can be compressed in the axial direction.
  • the expansion element is in particular elastically shortened by a force acting in the direction of the longitudinal axis of the fastening sleeve.
  • the force required for this purpose is applied for example by a screw inserted into the fastening sleeve or an injection needle for introducing the adhesive onto the expansion element.
  • the expansion element may have a compression element.
  • a rear engagement element for engaging behind the inner side of the rear cover layer of the sandwich panel can be configured on the thus designed expansion element.
  • the compression element When inserting the screw or the injection needle into the fastening sleeve, the compression element is compressed and the rear engagement element is pressed radially outwards.
  • the rear engagement element engages behind the inside of the rear cover layer of the sandwich panel and is supported by the elastically shaped compression elements against the pressed back cover layer.
  • the fastening sleeve can also have an abutment element, for example a collar for bearing against the outside of the rear cover layer or feet for bearing against the inside of the front cover layer, so that the abutment element is pressed by the compressed expansion element against a cover layer. As a result, the fastening sleeve is clamped against at least the cover layer, and mechanically fixed.
  • the expansion element is integrally formed on a wall of the fastening sleeve, preferably by means of a film hinge.
  • the film hinge can be elastically biased so that the expansion element rests against the wall of the mounting sleeve without external force and then spreads after insertion of the mounting sleeve in an opening in the sandwich panel due to a force exerted on the expansion element. It is also possible that the expansion element is spread open without external force, that protrudes from the wall of the mounting sleeve, then pressed during insertion to the wall of the hole and then spread again by its elastic bias and thus engages behind the cover layer of the sandwich panel.
  • the restoring force of the expansion element can be adjusted by different wall thicknesses or different thicknesses of the film hinge.
  • the adhesive outlet opening is provided in the direction of insertion behind the expansion element.
  • the fastening sleeve is glued to the rear, pierced cover layer of the sandwich panel on the one hand.
  • the expansion element can be pressed by the exiting adhesive to the outside. Another advantage is that the adhesive is optionally retained by the spreader so that it better bonds the backsheet.
  • the fastening sleeve in particular the adhesive outlet opening is provided so that the at least one expansion element can be accommodated in it. Thereby, the spreader can be easily inserted into the hole in the back cover layer.
  • a front adhesive outlet opening is provided.
  • the fastening sleeve is glued to the front cover layer. This can be done alternatively or in addition to a bond to the rear cover layer, ie it can additionally be provided behind the spreader an adhesive outlet opening.
  • the expansion element is formed umbrella-shaped in the spread state.
  • the umbrella folds up. If the mounting sleeve inserted into the hole, then the screen spreads, that is, it unfolds again.
  • the umbrella-shaped expansion element better retains the adhesive emerging from an adhesive opening behind the expansion element. This does not run thereby and sticks better to the rear cover layer in the direction of insertion, whereby the fastening sleeve is anchored more secure in the sandwich panel.
  • a flow restrictor is provided behind the front adhesive outlet opening.
  • the flow restrictor may in particular be designed as a pinhole.
  • the flow restrictor causes a stowage of the filled adhesive, so that a sufficient amount of adhesive exits from those adhesive outlet openings, which are arranged behind the flow restrictor.
  • a thread or a corrugation is provided at the rear of the mounting sleeve.
  • the thread or the corrugation serves as a guide for the adhesive emerging from the adhesive outlet opening and holds the thread in the sandwich panel.
  • the glue runs along the thread or the corrugation and spreads better in the hole in the sandwich panel.
  • the adhesive which emerges on the inside of the rear cover layer glues the fastening sleeve there to the sandwich panel, thereby further increasing the strength of the bond.
  • the thread can also be designed so that it cuts itself a thread in the cover layer during screwing. As a result, the fastening sleeve is additionally held and anchored in the sandwich panel.
  • the length adjusting device consists of radially extending folds which are elastic or plastically, for example bellows, are deformable. Such a length adjusting device can retain the adhesive particularly well.
  • the length adjusting device has one or in particular a plurality of bending elements.
  • the bending elements are formed on the front of the mounting sleeve and bend inwards and / or outwards.
  • the flexures flex outward or inward, thus fitting the mounting sleeve to the thickness of the sandwich panel.
  • the adhesive exits from the free spaces formed between the adjacent flexures. It is achieved a particularly good adhesion to the front cover layer.
  • the length-adjusting device has at least two bending elements, which are connected to one another by a guide element.
  • the guide element is designed such that it ruptures under the action of force from a front end in the direction of insertion.
  • a type of zipper or a thin spray skin may be formed as a guide element between the bending elements. If, as described above, the fastening sleeve with the bending elements abuts against the inside of the front covering layer and the bending elements bend outward, the zipper tears or splits.
  • the tearing open of the guide element takes place from the front end of the fastening sleeve in the insertion direction, since here the distance between the bending elements and thus the tension in the guide element is greatest.
  • the connections between the bending elements by the guide element prevents the adhesive from exiting far away from the cover layer.
  • the guide directs the adhesive to the intended location. By tearing the connection between the bending elements ensures that the adhesive can escape from the mounting sleeve and comes into contact with a sufficiently large surface of the cover layer.
  • Figure 1 is a sectional view of a fastening sleeve according to the invention during insertion into a hole in a cover layer;
  • Figure 2 is a sectional view of the Befest onlysh ⁇ lse with inserted
  • Figure 3 is a sectional view of the mounting sleeve in the installed state in the
  • FIG. 1 shows a sectional view of a fastening sleeve 1 according to the invention.
  • the fastening sleeve 1 serves to fasten screws or the like in a sandwich plate 15, as used for example for furniture.
  • the fastening sleeve 1 consists of a substantially cylindrical base body.
  • the cylindrical base body has a receiving recess 2, which extends in the axial direction from the rear in the direction of insertion rear side 3 of the mounting sleeve 1 to its front in the direction of insertion 4, a plurality of adhesive outlet openings 5, two or more spreading elements 6 and at the front in the direction of insertion Page 4 several bending elements 7 on.
  • the spreading elements 6 consist of a rear engagement element 23 and a compression element 28.
  • the attachment sleeve 1 has a collar 29 at its rear end 3.
  • the bending elements 7 are integrally formed on a wall 8 as outwardly pointing projections 10.
  • the extensions 10 are connected to each other by a thin spray skin 11.
  • the extensions 10 and the spray skin 11 serve as guide elements 12 for the adhesive 31, not shown in FIG. 1.
  • a corrugation 13 is provided on the circumference of the wall 8. The entire fastening sleeve 1 is produced in one piece by injection molding.
  • FIG. 2 shows a sectional view of the fastening sleeve 1 during insertion into a borehole 14 in the sandwich panel 15.
  • the sandwich panel 15 consists of a rear cover layer 16, a front cover layer 17 and an intermediate layer 18, the terms “front” and “rear” again refer to the direction of insertion of the mounting sleeve 1.
  • the two cover layers 16, 17 are made of wood.
  • the intermediate layer 18 is made of a material of low density and strength, such as a honeycomb structure.
  • the borehole 14 is a blind hole, which is the rear cover layer 16 and the intermediate layer 18 penetrates.
  • the front cover layer 17 is not pierced, but it could be drilled.
  • the receiving recess 2 runs axially from the rear end 3 to the front end 4 of the fastening sleeve 1 and opens into a front, front adhesive outlet opening 19.
  • the front adhesive outlet opening 19 can also be regarded as part of the continuous receiving recess 2.
  • At the rear end 3 of the mounting sleeve 1 also adhesive outlet openings 5 are attached. These rear adhesive outlet openings 20 are arranged behind the spreading elements 6.
  • a flow restrictor 21 is arranged between the front adhesive outlet opening 19 and the rear adhesive outlet openings 20.
  • the flow restrictor 21 is formed as a pinhole.
  • On the wall 8 of the mounting sleeve 1 openings 22 are formed, which also serve as adhesive outlet openings 5.
  • the fastening sleeve 1 as shown in FIGS. 2 and 3, is introduced into a borehole 14 in the rear cover layer 16 of the sandwich panel 15, the expansion elements 6, in particular the rear engagement elements 23, are pressed into the openings 22 by the borehole wall.
  • the mounting sleeve 1 can be inserted so far into the borehole 14 until the collar 29 rests against the outer side of the rear cover layer 16.
  • an injection needle 30 of an injection device not shown, are introduced, through which the adhesive 31 is introduced into the mounting sleeve 1.
  • the injection needle 30 presses on the rear engagement elements 23 whereby the upsetting elements 28 are compressed axially, in the direction of the axis of the attachment sleeve 1, and are pressed outwards in such a way that they engage behind the rear cover layer 16.
  • the compression elements 28 are biased elastically.
  • the collar 29 serves as an abutment and ensures that the mounting sleeve 1 is not pressed into the borehole 14. Since the compression elements 28 press the rear engagement elements 23 against the inner side of the rear cover layer 16 and thus clamp against the collar 29, the fastening sleeve 1 is aligned normal to the rear cover layer 16, clamped in the borehole 14 and mechanically fixed.
  • a screw can already be screwed into the fastening sleeve 1 in order to attach further components to the sandwich panel 15.
  • An additional attachment may result from the corrugation 13.
  • the corrugation 13 at the rear end 3 of the mounting sleeve 1 serves on the one hand the better adhesive distribution.
  • the elevations of the corrugation 13 engage in the case of a tightly drilled Borehole 14 in the material of the rear cover layer 16 and hold the mounting sleeve 1 in addition in the sandwich plate 15 fixed.
  • the corrugation 13 may also be provided a thread, so that the mounting sleeve 1 when screwing into the rear cover layer 16 cuts.
  • Mounting sleeve 1, adhesive 31 and sandwich plate 15 together form a mounting arrangement.
  • the bending elements 7 do not rest on the front cover layer 17.
  • the guide elements 12 located between the bending elements 7 completely close the area between the bending elements 11.
  • the adhesive outlet openings 5 are provided as described above in different areas of the mounting sleeve 1 and accordingly have different functions.
  • Mounting sleeve 1 penetrates adhesive 31 from the opening 22 and engages behind the rear cover layer 16.
  • the flow restrictor 21 causes a stowage of the filled adhesive and ensures that the adhesive emerges uniformly from all openings 5.
  • the length of the fastening sleeve 1 is adapted to the thickness of the sandwich panel 15, the bending elements 7 serve as a length adjustment device 32. Leakage of the adhesive 31 from the front adhesive outlet opening 19 is limited by the bending elements 7 and the spray skin 11. If the bending elements 7 abut with their front ends against the inside of the front cover layer 17 they are bent outwards and the spray skin 11, which serves as a guide element 12, tears from its front end, so that the adhesive 31 in this area unhindered emerge can.
  • the mounting sleeve 1 is shown in fully installed condition.
  • the adhesive 31 has emerged from the front adhesive outlet opening 19 and connects the fastening sleeve 1 with the front cover layer 17.
  • the opening 22 also serves in this case as an adhesive outlet opening 5, from which, as well as from the rear adhesive outlet opening 20, adhesive for bonding with the rear Top layer 16 emerges.
  • the adhesive may emerge from the opening 22 and between the flexures 7 so as to join the intermediate layer of the panel.
  • the adhesive 31 fills the receiving recess 2 completely in this case. It is also conceivable that the exception recess 2, if necessary, is only partially filled. Due to the mechanical fixing of the fastening sleeve 1, a screw, not shown, or a similar fastening element can now be introduced into the adhesive and / or the receiving recess 2, even if the adhesive has not yet cured completely.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)

Abstract

L'invention concerne une douille de fixation (1) qui présente un évidement, servant à loger un élément de raccordement, ainsi qu'un orifice de sortie d'adhésif (5). L'objectif de l'invention est de permettre l'utilisation de cette douille de fixation (1) pour des panneaux sandwich de différentes épaisseurs. À cet effet, la douille de fixation (1) présente un épaulement (29) et un dispositif d'adaptation de longueur (32).
EP09749554A 2008-05-20 2009-05-08 Douille de fixation Withdrawn EP2279355A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810024321 DE102008024321A1 (de) 2008-05-20 2008-05-20 Befestigungshülse
PCT/EP2009/003285 WO2009141064A1 (fr) 2008-05-20 2009-05-08 Douille de fixation

Publications (1)

Publication Number Publication Date
EP2279355A1 true EP2279355A1 (fr) 2011-02-02

Family

ID=40765515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09749554A Withdrawn EP2279355A1 (fr) 2008-05-20 2009-05-08 Douille de fixation

Country Status (3)

Country Link
EP (1) EP2279355A1 (fr)
DE (1) DE102008024321A1 (fr)
WO (1) WO2009141064A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009002923U1 (de) * 2008-12-22 2010-05-20 Hettich-Heinze Gmbh & Co. Kg Klebedübel
DE102009013847A1 (de) * 2009-03-18 2010-09-23 Fischerwerke Gmbh & Co. Kg Ankerhülse
DE102010000119A1 (de) * 2010-01-19 2011-07-21 fischerwerke GmbH & Co. KG, 72178 Befestigungshülse
CN102753767B (zh) 2010-02-05 2014-10-22 贝尔直升机泰克斯特龙公司 用于将构件连接至芯强化结构的装置及其组合
DE102014214903A1 (de) * 2014-07-30 2016-02-04 Bayerische Motoren Werke Aktiengesellschaft Befestigungsvorrichtung für ein Sandwichbauteil
FR3146175B1 (fr) * 2023-02-27 2025-03-21 Airbus Operations Sas Insert tubulaire pour un panneau sandwich, procédé de pose d’un tel insert tubulaire dans un orifice traversant d’un panneau sandwich et panneau sandwich comportant au moins un tel insert tubulaire

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577629A1 (fr) * 1985-02-14 1986-08-22 Cougnaud Fils Sa Ets Cheville pour la fixation d'objets a l'aide d'une vis contre une cloison creuse
DE202005005579U1 (de) * 2005-04-07 2006-08-17 Hettich-Heinze Gmbh & Co. Kg Verbindungseinsatz
DE202007014562U1 (de) * 2007-10-16 2009-03-05 Hettich-Heinze Gmbh & Co. Kg Aus Kunststoff gefertigter Klebedübel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009141064A1 *

Also Published As

Publication number Publication date
DE102008024321A1 (de) 2009-11-26
WO2009141064A1 (fr) 2009-11-26

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